Tools & Calculators

Substrate calculators, species parameter tables, cheat sheets, and decision guides.

35 tips across 3 topics

Quick Reference

10 tips

  • Substrate moisture content guide — how wet should each substrate be?
  • Spawn ratio quick-reference — how much spawn per substrate?
  • Wet-to-dry weight conversion for common substrates and mushrooms
  • +7 more...

Cheat Sheets

10 tips

  • Species parameters comparison — side-by-side growing conditions
  • Contamination quick-ID guide — identify contaminants by color and texture
  • Substrate recipes cheat sheet — all common recipes in one place
  • +7 more...

Troubleshooting Decision Guides

15 tips

  • My substrate isn't colonizing — what should I check?
  • My mushrooms have long stems and tiny caps — what's wrong?
  • My grain jars smell weird — is it contaminated?
  • +12 more...